NEET Solved Paper 2018 Question 4

Question: The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is [NEET - 2018]

Options:

A) 6.25%

B) 20%

C) 26.8%

D) 12.5%

Show Answer

Answer:

Correct Answer: C

Solution:

  • Efficiency of ideal heat engine, $ \eta \text{=}( \text{1-}\frac{{T_2}}{{T_1}} ) $
    $ {T_2} $ : Sink temperature $ {T_1} $ : Source temperature % $ \eta \text{=}( \text{1-}\frac{{T_2}}{{T_1}} )\times\text{ 100} $ $ =( 1-\frac{273}{373} )\times 100 $ $ =( \frac{100}{373} )\times 100=26.8$% $